Takegawa new design billet aluminum head cover with internal baffle allows the head to vent pressure at high rpm without that annoying loss of engine oil through the breather tube. Clever baffle design provides an internal barrier to reduce fluid loss while still venting efficiently. For all CRF50 XR50 Z50 Monkey Gorilla CT70 Dax CD50 and other horizontal cylinder engines with CRF50 stud patterns. This listing for black anodized version.